
import { GridBox } from "std-widgets.slint";
export component MainWindow inherits Window {
  height: 300px;
  width: 200px;
  GridBox { 
    spacing: 2px;
    Rectangle {background: red;height: 30px;width: 30px;}
    Rectangle {background: yellow;height: 30px;width: 30px;}
    Rectangle {background: green;height: 30px;width: 30px;}
   }
}